In Six Sigma we track stability using what is known as "The 7 Run Rule" [1] Not only do you want to see spikes but also unusual activity that suggests further

In Six Sigma we track stability using what is known as "The 7 Run Rule" [1] Not only do you want to see spikes but also unusual activity that suggests further investigation is warranted. [1] https://www.qimacros.com/control-chart/stability-analysis-control-chart-rules/ https://www.qimacros.com/control-chart/stability-analysis-co...